Visitors Authority spokeswoman Courtney Fitzgerald says the first national commercial with the tagline will air on September 30.

Tourism officials have been giving the slogan a rest since the summer of 2012.

Instead, they have been promoting the hotel reservation website lasvegas.com. Among other ads, tourism officials filmed commercials with late-night comedian Jimmy Kimmel, who played a character LasVegasdotcom who's constantly mistaken for the travel website by the same name.

The "What happens here, stays here" ads present Sin City as a place where visitors can do things they would never want their friends and family back home to find out about.

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